Does the watch have the same phone number as my Iphone?

Hi there.

Yes, the GPS + Cellular version of Apple Watch Series 3 has the same phone number as your iPhone. It has a built-in eSIM that copies information from the paired iPhone's SIM card. You just have to get your carrier service plan that includes the support of the watch.

Hello Trentzii I had the same question when I got my Apple Watch Series 3 (GPS+Cellular). It does use the same phone number as well as anything that is important like phone numbers and the Siri voice and all that good stuff. Hope you enjoy your day